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Java client for GeneXus Server services

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/*
 * The MIT License
 *
 * Copyright 2020 GeneXus S.A..
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.genexus.gxserver.client.helpers;

import jakarta.xml.bind.annotation.adapters.XmlAdapter;

/**
 *
 * @author jlr
 *
 * For TeamWorkService2.GetVersions() GXserver exports boolean elements only if
 * they are true, and it uses "True" (title case) if that's the case.
 *
 * This adapter checks string values ignoring case (so as to recognize "True")
 * and converts to null when the value is false (so as to avoid writing it).
 *
 * This makes sure the roundtrip (converting the received XML string to Document
 * and back to string) returns the same result.
 */
public class TrueOrNothingBooleanAdapter extends XmlAdapter {

    @Override
    public Boolean unmarshal(String strValue) throws Exception {
        return strValue.compareToIgnoreCase("true") == 0;
    }

    @Override
    public String marshal(Boolean booleanValue) throws Exception {
        return booleanValue ? "True" : null;
    }
}